WN 347 then UA 1561 at Denver
Birmingham (Alabama) → Denver → San Francisco
Timetable, Denver time
18:45WN 347 from Birmingham (Alabama) at the gate
11:20UA 1561 to San Francisco leaves the gate
16 h 35 apart on the timetable, overnight
UA 1561 leaves 16 h 35 after WN 347 arrives on the timetable: more than half a day, so not a connection we count.